<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../../vue.js"></script>
</head>
<body>
    <div id="app">
        <p>{{count}}</p>
        <button @click="add">点击累加</button>
    </div>
    <script>
        Vue.config.productionTip = false;
        const vm = new Vue({
            el:'#app',
            data(){
                return{
                    count:1
                }
            },
            methods:{
                add(){
                    // console.log(this);
                    this.count++
                }
            }
        })
    </script>
</body>
</html>